Hey John First of all that is one awesome truck! The best Ford EV in my opinion! :-)
Since you are only looking for clutch action while rolling I would also suggest an actuator too but maybe something that is air or vacuum driven. I have used electric linear actuators before with a cheap reversing pole switch on one of my boats to operate the forward and reverse. Outboards have a clutch dog in forward that allows the prop to spin on deceleration so reversing the motor would only spin the clutch and not the prop. I used a 4 inch stroke linear actuator but it didn't work great - too slow was the main cause - took 4-6 seconds to go from from Forward to reverse, which seemed to be an eternity when trying to slow down and dock. Second issue was that the stroke got a little out of alignment and pushed too hard on the lever and eventually put a notch in the shift mechanism which caused reverse to become troublesome. I ended tearing the bottom end out and putting a spacer in the clutch dog spring which made the clutch pretty well locked so I could put the traction motor in reverse instead. But in your case a small air actuator would work well and would move a lot quicker, especially on release as the clutch spring could push it back very quickly. A linear actuator might work for you but they are probably too slow for your use, even a couple seconds each way would be pretty painful on the highway I imagine. Cheers Dan On Mon, Feb 26, 2018 at 2:17 PM, Cliff Crabtree via EV <ev@lists.evdl.org> wrote: > Hi John, > > For reference I'm using these pictured from ebay: > > 1992 automatic transmission brake pedal assembly: > https://i.ebayimg.com/images/g/U8oAAOSwqaJaYWUY/s-l1600.jpg > > 1992 manual transmission combined brake clutch pedal assembly: > https://i.ebayimg.com/images/g/o14AAOSw8-FaVSQR/s-l1600.jpg > > > Yes. It does appear that the pedal assemblies for automatic and manual > transmissions are quite different and it would be very difficult to add a > clutch pedal to the brake assembly for the automatic. What I am suggesting > is replacing the (single pedal) brake pedal assembly with the (two pedal) > combined clutch brake pedal assembly from a manual transmission F-150. It > appears that the single pedal assembly is bolted to the firewall/vacuum > booster/master cylinder with 4 bolts through the firewall plus 2 bolts to a > cross member above the assembly (probably the dash support). Removing > these 6 bolts and the linkage to the brake master cylinder would allow the > removal of this assembly. It appears that 5 of the 6 bolt holes can be > reused to attach the combined two pedal assembly. If the cross member does > not a have hole properly aligned for the attachment of the dual pedal > assembly a new hole would need to be drilled. Reconnect brake master > cylinder the linkage and you would now have the brake setup as original but > with a clutch pedal flopping on the outboard side of the brake pedal. > > Two additional holes may need to be drilled for attaching the clutch > master cylinder to the firewall and a hole cut for the linkage to the > clutch master cylinder. Then attach the clutch master cylinder to the > firewall and the clutch pedal. Install the slave cylinder on the > transmission/bell housing. Install the hydraulic tubing between master > cylinder and the slave cylinder. > > That being said, this does not answer your original question but is rather > a follow on to another another suggestion. > > To address though not actually answer your original question: > > > I have been looking for linear actuators to replace the shift and selector > cables. he cables take up too much space in the engine compartment of my > Fiero - space where would rather put batteries. So I have been looking to > this a little. In general what I've found is that it is difficult to fine > speed force and travel that would meet my requirements. I can have to of > the three, almost any two but not all three. But this site might be worth > a look for your problem. > > https://www.progressiveautomations.com/linear-actuators/ > stroke/1-inch/force/150-lbs > > > <https://www.progressiveautomations.com/linear-actuators/ > stroke/1-inch/force/150-lbs> > > Click on the shopping cart to configure what you want. I chose 1" - 150 > lbs and the only speed option was 0.59 inches per second. which means it > would take 1.7 seconds to move the full 1". This may be a little slower > that what your looking for. There may be other configuration options that > would work for you. > > > Hope this helps > > > Cliff > > > > > On 02/25/2018 07:03 PM, John Lussmyer via EV wrote: > >> On Sun Feb 25 13:15:12 PST 2018 ev@lists.evdl.org said: >> >>> https://www.ebay.com/itm/87-91-Ford-Hydraulic-Clutch-Brake- >>> Pedal-Assembly-F150-F250-F350-Bronco-Manual/323080675802? >>> hash=item4b391be1da:g:ri8AAOSwuA1ah8XC&vxp=mtr >>> >>> Perhaps F-150s had a hydraulic clutch for some years. More research is >>> required but you may be able to pick up a used one at a salvage yard. >>> >> Yes, ford trucks have had hydraulic clutches for years. >> As I have said, the problem is MOUTING the clutch pedal. >> This truck was originally an automatic, the pedal mounting system is >> completely different from the manual transmission version of the truck. >> >> >> -- >> >> Tigers prowl and Dragons soar in my dreams... >> _______________________________________________ >> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub >> http://lists.evdl.org/listinfo.cgi/ev-evdl.org >> Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group >> /NEDRA) >> >> > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/ > 20180226/7da179c9/attachment.html> > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group > /NEDRA) > > -------------- next part -------------- An HTML attachment was scrubbed... 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